1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/*
* linux/arch/arm/mach-omap2/usb-musb.c
*
* This file will contain the board specific details for the
* MENTOR USB OTG controller on OMAP3430
*
* Copyright (C) 2007-2008 Texas Instruments
* Copyright (C) 2008 Nokia Corporation
* Author: Vikram Pandita
*
* Generalization by:
* Felipe Balbi <felipe.balbi@nokia.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/usb/musb.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <mach/am35xx.h>
#include <plat/usb.h>
#include <plat/omap_device.h>
#include "mux.h"
static struct musb_hdrc_config musb_config = {
.multipoint = 1,
.dyn_fifo = 1,
.num_eps = 16,
.ram_bits = 12,
};
static struct musb_hdrc_platform_data musb_plat = {
#ifdef CONFIG_USB_MUSB_OTG
.mode = MUSB_OTG,
#elif defined(CONFIG_USB_MUSB_HDRC_HCD)
.mode = MUSB_HOST,
#elif defined(CONFIG_USB_GADGET_MUSB_HDRC)
.mode = MUSB_PERIPHERAL,
#endif
/* .clock is set dynamically */
.config = &musb_config,
/* REVISIT charge pump on TWL4030 can supply up to
* 100 mA ... but this value is board-specific, like
* "mode", and should be passed to usb_musb_init().
*/
.power = 50, /* up to 100 mA */
};
static u64 musb_dmamask = DMA_BIT_MASK(32);
static void usb_musb_mux_init(struct omap_musb_board_data *board_data)
{
switch (board_data->interface_type) {
case MUSB_INTERFACE_UTMI:
omap_mux_init_signal("usba0_otg_dp", OMAP_PIN_INPUT);
omap_mux_init_signal("usba0_otg_dm", OMAP_PIN_INPUT);
break;
case MUSB_INTERFACE_ULPI:
omap_mux_init_signal("usba0_ulpiphy_clk",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_stp",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dir",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_nxt",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat0",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat1",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat2",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat3",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat4",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat5",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat6",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat7",
OMAP_PIN_INPUT_PULLDOWN);
break;
default:
break;
}
}
static struct omap_musb_board_data musb_default_board_data = {
.interface_type = MUSB_INTERFACE_ULPI,
.mode = MUSB_OTG,
.power = 100,
};
void __init usb_musb_init(struct omap_musb_board_data *musb_board_data)
{
struct omap_hwmod *oh;
struct platform_device *pdev;
struct device *dev;
int bus_id = -1;
const char *oh_name, *name;
struct omap_musb_board_data *board_data;
if (musb_board_data)
board_data = musb_board_data;
else
board_data = &musb_default_board_data;
/*
* REVISIT: This line can be removed once all the platforms using
* musb_core.c have been converted to use use clkdev.
*/
musb_plat.clock = "ick";
musb_plat.board_data = board_data;
musb_plat.power = board_data->power >> 1;
musb_plat.mode = board_data->mode;
musb_plat.extvbus = board_data->extvbus;
if (cpu_is_omap3517() || cpu_is_omap3505()) {
oh_name = "am35x_otg_hs";
name = "musb-am35x";
} else {
oh_name = "usb_otg_hs";
name = "musb-omap2430";
}
oh = omap_hwmod_lookup(oh_name);
if (WARN(!oh, "%s: could not find omap_hwmod for %s\n",
__func__, oh_name))
return;
pdev = omap_device_build(name, bus_id, oh, &musb_plat,
sizeof(musb_plat), NULL, 0, false);
if (IS_ERR(pdev)) {
pr_err("Could not build omap_device for %s %s\n",
name, oh_name);
return;
}
dev = &pdev->dev;
get_device(dev);
dev->dma_mask = &musb_dmamask;
dev->coherent_dma_mask = musb_dmamask;
put_device(dev);
if (cpu_is_omap44xx())
omap4430_phy_init(dev);
}
|
